9/11 Photos: 11 Iconic Images From Sept. 11 and Its Aftermath

Many Americans haven't forgotten the images of New York's twin towers emitting smoke plumes over the Manhattan skyline after two passenger airliners slammed into their facades on Sept. 11, 2001. That day marked a drastic shift in the American political and cultural landscapes, the effects of which are still felt 14 years later.

Every year since 9/11, American leaders, New Yorkers and others around the country have set the day aside to reflect on the attacks and their aftermath. On Friday, the fourteenth anniversary of the Sept. 11 attacks, people across the United States are expected to continue that tradition with various remembrance events, including flag-raising ceremonies and moments of silence.

In New York, the scars from the Sept. 11 terrorist attack in lower Manhattan have become a museum and a memorial. In place of two skyscrapers is one gleaming tower, dubbed One World Trade Center, which opened in November.

Here are 11 iconic images from the Sept. 11 terrorist attacks and its aftermath:

Smoke pours from the World Trade Center complex after two planes struck the buildings on Sept. 11, 2001, in New York City.Source: Craig Allen/Getty Images

People walk in the street in the area where the World Trade Center buildings collapsed on Sept. 11, 2001, following a terrorist attack.Source: Mario Tama/Getty Images

Smoke rises over the New York skyline from the scene of the World Trade Center attack. This photo was taken from a tugboat evacuating people from Manhattan to New Jersey.Source: Hiro Oshima/Getty Images

The rubble of the World Trade Center smolders following the Sept. 11, 2001, terrorist attack in New York City.Source: Alex Fuchs/AFP/Getty Images

An unidentified New York City firefighter walks away from ground zero after the collapse of the Twin Towers on Sept. 11, 2001.Source: Anthony Correia/Getty Images

People evacuate the area around the World Trade Center after it was hit by two planes on Sept. 11, 2001.Source: Mario Tama/Getty Images

Police and firefighters run away from the huge dust cloud caused by the World Trade Center's tower one collapsing after terrorists crashed two hijacked planes into the towers on Sept. 11, 2001. Source: Jose Jimenez/Primera Hora/Getty Images

Firemen head south on the West Side Highway toward the remains of the World Trade Center, where smoke continued to billow hours after the towers collapsed on Sept. 11, 2001. Source: Gabe Palacio/Getty Images

President George W. Bush has his early morning school reading event interrupted by his Chief of Staff Andrew Card shortly after news of the New York City airplane crashes reached Sarasota, Florida.Source: Paul J. Richards/AFP/Getty Images